The leaf structure of the host plant can affect the development and reproduction of the predatory enemies of spider mites. The objective of this study was to compare the effects of five host plant species [cucumber (Cucumis sativus L.), cotton (Gossypium hirsutum L.), eggplant (Solanum melongena L.), tomato (Lycopersicon esculentum Mill.) and green bean (Phaseolus vulgaris L.)] on the development and reproduction of Neoseiulus bicaudus feeding on Tetranychus turkestani. There were significant differences in the characteristics of trichomes on the surfaces of the host plant species. Tomato leaves had the greatest trichome density (782 trichomes/cm²) whereas green bean leaves had the least density (58 trichomes/cm²). Cucumber had the longest trichomes (1.58 mm) and green bean had the shortest (0.14 mm). N. bicaudus developed into adulthood and completed its development on all five plant species. The total immature period of N. bicaudus feeding on T. turkestani was shortest (5.07 d) on tomato. N. bicaudus on cucumber had the longest previposition period (2.78 d) and the shortest oviposition period (11.96 days). Total fecundity was highest on green bean (42.4 eggs/day/female) and lowest on cucumber (20.81 eggs/day/female). The female/male sex ratio was highest on cucumber (0.76) and lowest on tomato (0.65). The net reproductive rate (R₀) was 14.55 on cucmber, 23.54 on cotton, 21.79 on eggplant, 24.05 on tomato, and 34.61 on green bean. In conclusion, among the five host plant species in this study, green bean was best and cucumber was worst for the development and reproduction of N. bicaudus preying on T. turkestani.